Re: DC Temporarily Off-line, Remaining DC Struggling

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Hi Richard,

I would like to confirm that does the client use roaming profile? If they
use local profile, win2k server will not affect the client desktop. From
your description, it seems the client still want to find the win2k serve
instead of win2k3 server. I agree with Paul that checking DNS will be a
good idea. _msdcs is the critical domain, the client will want to contact
DNS server to find _msdcs to locate the DC when the client logon to the
domain. Therefore, please check if _msdcs contains record point to win2k3
server. On one XP client, please issue the following command
Nslookup
DomainName

Here, DomainName is the your domain name. The command should return all DCs
in the domain, you then use the following command:

Type=srv
DomainName

Do you see win2k3 server is listed?

In addition, you can refer to the following steps to rebuild _msdcs
subdomain on win2k3 DNS server:

1. Right-click Forward Lookup Zones in DNS and select New Zone.
2. Specify Primary Zone, and use _msdcs.domain.local as the Zone name.
3. Stop Netlogon and DNS service.
4. Rename %windir%\system32\config\netlogon.dns and netlogon.dnb
5. Start Netlogon and DNS service
6. ipconfig/flushdns and ipconfig/registerdns, it is on the client to issue
the command instead of the server.
7. Close and reopen the DNS snapin.
8. Verify _msdcs.domain.local contains dc, domains, gc, and pdc.

Please restart one client and logon to the domain, does this issue present?
If so, please refer to the following article to gather the MSPreport on the
win2k3 server, please download MPSRPT_DirSvc.EXE on for the DC:

Microsoft Product Support's Reporting Tools
http://www.microsoft.com/downloads/details.aspx?familyid=cebf3c7c-7ca5-408f-
88b7-f9c79b7306c0&displaylang=en

please send the MPSreport to v-rebc@xxxxxxxxxxxxx for research.

Any update, let's get in touch!

Best regards,

Rebecca Chen

MCSE2000 MCDBA CCNA


Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security

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--------------------
>From: "Richard Tubb" <richard@xxxxxxxxxxxxxxxxxxxx>
>References: <OXurd6NgFHA.1044@xxxxxxxxxxxxxxxxxxxx>
<Ti7T7PUgFHA.3240@xxxxxxxxxxxxxxxxxxxxx>
<u20y0cUgFHA.3108@xxxxxxxxxxxxxxxxxxxx>
<ubcZo7ZgFHA.460@xxxxxxxxxxxxxxxxxxxx>
>Subject: Re: DC Temporarily Off-line, Remaining DC Struggling
>Date: Tue, 5 Jul 2005 21:49:28 +0100
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>Message-ID: <eD7DLMagFHA.1432@xxxxxxxxxxxxxxxxxxxx>
>Newsgroups: microsoft.public.windows.server.active_directory
>NNTP-Posting-Host: brokerassistance.co.uk 62.173.74.14
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microsoft.public.windows.server.active_directory:31450
>X-Tomcat-NG: microsoft.public.windows.server.active_directory
>
>Hi Paul,
>
>Thanks for your response.
>
>We do have both DC's acting as DHCP servers using the 50/50 rule. We also
>have both DHCP servers handing out both DNS servers (a role which both DC's
>take) as Primary and Secondary DNS servers.
>
>We've now transferred the Schema Master and Domain Master Role to the
win2k3
>DC. Therefore, no FMSO roles reside on the win2k server anymore.
>
>In short, the win2k3 DC acts as a suitable DHCP, DNS and GC Server. It also
>has all the FMSO roles.
>
>However when we take the win2k DC off-line, the same problem persists.
Login
>is very slow, and then performance on the desktop is incredibly sluggish.
No
>errors are produced during login.
>
>When the win2k server is brought back on-line, logins go at normal speed
and
>there is no lag for users on the desktop.
>
>This situation is becoming critical for us as the win2k server is a
disaster
>waiting to happen. It is short of disk space and we'd like to be able to
>take it off-line for a rebuild, but only once the win2k3 server proves it
>can take the strain.
>
>The odd thing is DCDIAG shows no problems for either server, and nothing
>jumps out in the Event Logs on either DC. What could be causing the
problems
>whilst the win2k DC is off-line? Any help very gratefully received!!
>
>Regards,
>
>Richard Tubb.
>www.netlinktrading.co.uk
>
>"Paul Williams [MVP]" <ptw2001@xxxxxxxxxxx> wrote in message
>news:ubcZo7ZgFHA.460@xxxxxxxxxxxxxxxxxxxxxxx
>> This is probably because the DC that is temporarily down is also the DNS
>> server. Make sure that ALL TCP/IP clients use both DCs as DNS servers.
>>
>> > However we've noticed that after transferring the GC role to the Win2k3
>> > DC, the win2k DC shows Event ID 1534 in it's "Directory Service" Event
>> > log, "This machine holds the Domain Master Role, and is not a GC. These
>> > two states are incompatible. Either this machine should be made a GC or
>> > the role should be transferred to a machine that is a GC".
>>
>> Don't worry about that error:
>> -- http://www.msresource.net/content/view/14/46/
>>
>>
>> > I'm not aware of how we might transfer the "Domain Master Role" - can
>you
>> > advise?
>>
>> You transfer the DM via AD Trusts:
>> -- http://www.msresource.net/content/view/28/47/
>>
>>
>> If you also use DHCP you might want to consider making both DCs DHCP
>servers
>> and using the 80/20 rule. Or, as I prefer, the 50/50 rule. This is
where
>> you create the same scope on both and exclude half the addresses on one
>> server and the opposite half on the other.
>>
>> --
>> Paul Williams
>> Microsoft MVP - Windows Server - Directory Services
>> http://www.msresource.net | http://forums.msresource.net
>>
>>
>>
>
>
>

.

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